Core structure for paper rolls



29, E931. P D PARSONS 1,839,047V

CORE STRUCTURE FOR PAPER ROLLS Filed oet. 1, 195o dif for ey.

Patented Dec.Y 29, 1931 UNITED STAT ES ,i 1,839,041 i i PATENT- oFFicE.

rHILIP` D, rARsoNsQoF svvan'inmonn, PENNSYLVANIA, AssrGNoR To sco'rr PAPER -1 ooiurANYpyA CORPORATION. or PENNSYLVANLA conn STRUCTURE Foa rAPER aoLLs v appiiatin sied october i, 19,30. seriai No. 485,81o.

Heretofore it has beenthe practice in` paper making to wind the web leaving the last dryingcylinder of. a paper-making machine into a large roll upon .a central bore or cylinder having extended ends constituting journals, subsequently severing the paper web andV starting it to wind' upon a second core or cylinder, and at this time transferring the fully.

wound paper roll to a separate machine` for. slitting and rewinding; and during the re-v winding operation, trimming andslitting the web into desired widths of .roll for subsequent treatment in making'articles such as towels and napkins, for example; and further, during `the transfer andrewinding Vof the paper roll, separately transferring the.

new roll being wound with'the paper from the dryingcylinders to the journal supports formerly employed for the paper roll which is transferred to theftrimming, slitting and rewindingmachine, and thereafter repeating theoperation. Y

This application is, inv part, a-continuing applicationiof my *application Serial No. 78,743, filed January 2,l 1926.` and1 which in turn is a'division of my application Serial No. 7 30,830, filed August 8, 1924 which was issued asllatent- Number;1 ,759,627f, dated q May 20, `1930. The present application is. especially directed to the structure of divided core and' mandrel adapted as aV composite drum for use where it is desired to divide and Wind a web of paper into a plurality of paper rolls each provided with a metal or other core of proper length and vsuitable for further handling of the paper in slitting and rewinding machines..

As a parti drum and mandrel of the present application,

l I li ave described in my applicationSerial No.

78,743, its adaptability for use in connection with what is known as a Pope winding reel,

set out in Lettersv Patent.1,248,542 of Decemler`4, 1917; butrIy do not restrict the use of i my invention to that-type .of windingmachine, as it is adapted tdv'ariousY typesof the slitting and rewinding machines already in use. Y n n Referring tothedrawings; Fig. 1 is a side view illustrating, diagrammatically, the

ksurate with the speed of the drum` 3.

cula-r use lof. the divided l coreV manner in which the paperweb 'may beslit and wound upon the divided tubular core and mandrelgfFig. y2 isa plan `view ofthe same; Fig. 3 is a plan view (partly in section) of my Vimproved divided tubular core and mandrelV the paper rolls H on 4the divided tubula'rcore and mandrel 12 press `andlbyfwhichtliey are, caused tofrotate at a surfacezspeedcommenf The constructionofthe Windingdruni 12 and its associated parts are best shown in Fig. 3, from which it will be'seen that the" mandrel shaft 13 is provided at each end witli Aa box 14 in which itis journalled and' bywhich it is supportedin the ends of the radial arms 16. The mandrel shaft is provided with collars13a by which the positions of the joui-nal boxes are assured and these boxesmay, ifde-` vsired, be of a size which will perniitthem be-` -in g drawn through the tube sections 12 Lfand 12b forming the drum12. I

If desired', theV journal movable fromthe shaft 13 whenit isdesired to separate the rolls of paper', each associated with its respective tubular coref12 and 12b.A It will be further seen that the shaft 13 isprovided with plug portions 24 and 25 .over and are arranged and supported' when' acting. as a drum; the plug 25b'eing preferably "longer than the plugs 24 as it supports the abutting ends of the two tubular core portions 12a and 12?). Y' Y. Y V i Near'oneend of the shaft 13 andadjacent to one of the end plugs 24there0n-,tis a col= lar 26 securedto theshaft-13g and at the otherV Vend between the other .end plug 24 and the shaft bearing 14, there is :arranged a second collar27 and a locking nutl28 'screwed upon, Vthe shaft. ,The collar 27 may be slotted, as..

Aupon which the tubular core parts 12a and 12bY A at 27 a (Fig. 4), and may be slipped over the shaft 13 before being clamped against the end of the tubular core 12a by the nut 28. When this has been done, the tube section 12b is clamped against the collar 26 while the tube section 12a is tightly abutted at 12o against the end of the tube section 12b; and at the same time, the collar 27 and nut 28 are the clamping means for the other and outer end' of the tube section 12a.

After the paper webs are wound upon these tube sections 12a and 12b, they, together with the tubes acting as cores, should be separated from the mandrel shaft 13 and its plugs and collars, the said cores remaining with the paper rolls and providing definite means of support for the rolls, when they are subjected to further treatment in other machines, such for example as being slit, transversely perforated and rewound into small commercial toilet paper rolls.

To accomplish this operation, the nut 28 is loosened, the collar 27 is withdrawn, and the shaft, together with the collar 26, its plugs 24 and 25, and nut 28, with or without its bearing 14, are withdrawn through the tube sections 12a and 12b. IVhen this mandrel portion of the equipment is withdrawn, the tubes will be entirely free toseparate and each roll will have its own tube or core.

As it is desirable to trim the side edges of the paper web P, the slitting cutters 7a provide the slit portions 5a, these lines of slitting being in alignment with the outer ends of the respective tube sections 12a and 12b, the narrow rolls formed outside of the line of slitting 5a. being waste. It will be understood that this trimmed waste may be discarded at once when the trimming has taken place.

While I have shown the drum 12 divided into two abutting tubular portions, I do not restrict myself in this particular, as it is manifest that the drum may be composed of two or more tubular sections as desired.

While the special construction of the drum 12 is adapted for use in connection with different types of machin-es, I have, by way of example, illustrated it in respect to its use in what is commercially known as a Pope reel. Referring to Figs. 1 and 2, it will be observed that the journal boxes 14 of the mandrel shaft 13 are supported in notched portions 15 of a pivoted frame 16 pivoted to move about an axis 17 under the action of a curved rack 16a and pinion 19 on a rotatable shaft 20 having a hand wheel 20a by which to rotate it. After the paper web is slitted and partly woundrupon the winding drum 12, and after the paperweb is severed from the pape roll H at the rear of the machine, said roll I-I may be removed and the radial arms 21 which formerly supported it may be adjusted toward the revolving drum 3 in such position as to receive the shaft or mandrel 13 of the drum carriedby the pivoted frame 16 when said frame is oscillated toward the said arms 21 whereby it is received by the open ends of said frame and after which, the slitted paper web is caused to continue to be wound upon the drum until a large roll is formed as shown at H; thereafter, a new drum 12 is placed in position upon thel frame 16, the paper web broken from the full roll H and attached to the drum to start anew roll. The rolls so formed are subsequently disconnected by the removal of the mandrel' 13 and permitting the core sections with their individual papers rolls to be separated as before described.

It will now be apparent that I have devised a novel and useful construction and method of operation thereof which embodies the features of advantage enumerated as desirable. and while I have in the present instance shown and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be understood that I do not restrict myself to the details stated as the some are susceptible of modification in various particulars, Without departing from the spirit or scope of the invention.

I claim:

l. A core structure constituting a drum for use in paper slitting and winding machines comprising a plurality of tubular core parts arranged end to end in abutting axial alinement and having their abutting portions positioned in exact transverse circumferential alinement with the slitted portions of the paper web being slit and wound, said abutting ends of the core parts being within a plane in which the abutting ends of the core parts and paper roll ends terminate so that the abutting core ends extend'exactly in the plane of the slitted ends of the paper roll, a shaft extending through the tubular core parts and having its respective ends provided with journals, and centralizing plugs upon the shaft of the same external diameter as the tubular opening in the core parts and in transverse alinement with the abutting ends thereof for supportingV the said tubular core parts in axial alinement witheach other and with the shaft.

2. The invention according to claim 1, wherein further, the shaft is provided with collars arranged to clamp the tubular cores in an end to end alinement, one of said collars being detachable, and journal bearings for t-he journals of the shaft and detachable` therefrom.

In testimony of which invent-ion, I hereunto set my hand.

PHILIP D. PARSONS. 

